|Rank|Name|Nationality|Time|Notes|
|---|---|---|---|---|
||Jill Sterkel|United States|1:00.53|NR, GR|
||Lisa Buese|United States|1:00.59||
||Nancy Garapick|Canada|1:02.96||
|4|Shelley Cramer|U.S. Virgin Islands|1:03.51|NR|
|5|Susan Sloan|Canada|1:03.52||
|6|Maria Paris|Costa Rica|1:03.58||
|7|Rosanna Juncos|Argentina|1:04.75||
|8|Adriana Pereira|Brazil|1:06.79||

Question: how many countries had two athletes representing their country?
Answer: 2